This is fixed in Edgy. If you need this in Dapper, please open a bug requesting a backport. Thank you and apologies that this did not make it in for Dapper.
** Changed in: listadmin (Ubuntu) Status: Confirmed => Fix Released -- listadmin doesn't work with the current version of mailman we ship https://launchpad.net/bugs/43008 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs